Mark Mardell, the BBC’s North American editor, issued a mea culpa of sorts today after Jonathan Karl at ABC News dropped his bombshell that proves beyond any doubt that the Obama Administration lied about its involvement in editing the CIA’s talking points surrounding the September 11 attack on our consulate in Libya.

In a piece titled, “After Benghazi revelations, heads will roll,” Mardell writes, “In the interests of full disclosure I have to say I have not in the past been persuaded that allegations of a cover-up were a big deal.” He adds, “It seemed to me a partisan attack based on very little.”

That all changed with today’s revelations. Mardell now believes:

This is the first hard evidence that the state department did ask for changes to the CIA’s original assessment.

Specifically, they wanted references to previous warnings deleted and this sentence removed: “We do know that Islamic extremists with ties to al-Qa’ida participated in the attack.”

There’s little doubt in my mind that this will haunt Hillary Clinton if she decides to run for president, unless she executes some pretty fancy footwork.

State department spokesperson Victoria Nuland is directly implicated, and the fingerprints of senior White House aides Ben Rhodes and Jay Carney are there as well.

If the rest of the mainstream media shows the integrity Mr. Mardell just did, the Obama Administration is about to finally be held accountable for an unforgivable coverup that started back in September and has lasted straight through to today.